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Programming Commands
Common Commands
*ESR?
The *ESR (event status register) query returns the value of the event
status register.
Syntax
*ESR?
Description When you read the standard event status register, the value returned
is the total of the bit weights of all of the bits that are set to one at
the time you read the byte. The following table shows each bit in the
event status register and its bit weight. The register is cleared when it
is read.
Query Response <integer> ranges from 0 to 255.
Example
OUTPUT 720;”*ESR?”
ENTER 720;Event
PRINT Event
Table 4-14. Standard Event Status Register
Bit Bit Weight Condition
7128PON – Power On
664Not Used
532CME – Command Error
416EXE – Execution Error
38DDE – Device Dependent Error
24QYE – Query Error
12Not Used
01OPC – Operation Complete